Are you playing the game for a period of time and using the in game reset button? The frame rate drops will persist through every reset. I need to edit my stream from Friday morning and show case this lag.

I put my nuggets in a desert, and they were able to get wood just fine. Its something early that can trigger the lack of wood gathering. Because the first time I played it, they just altogether stopped gathering wood. Didn't get any more than 15.